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Earthquake breaking news, Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.8 mag has occurred near Pangai in Tonga


Earthquake location -20.5462S, -173.9014WA light earthquake with magnitude 4.8 (ml/mb) was detected on Sunday, 94 kilometers (58 miles) from Pangai in Tonga. The epicenter was at a depth of 71.68 km (45 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The 4.8-magnitude earthquake was detected at 21:08:58 / 9:08 pm (local time epicenter). Global date and time of event UTC/GMT: 21/12/15 / 2015-12-21 09:08:58 / December 21, 2015 @ 9:08 am. Exact location of earthquake, -173.9014° West, -20.5462° South, depth 71.68 km. Id of earthquake: us100048kn. Event ids that are associated: us100048kn.

Epicenter of the event was 94 km (58 miles) from Pangai (c. 1 700 pop). Nearby country/countries that might be effected, Tonga (c. 123 000 pop). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Pangai.

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. There are an estimated 13,000 light earthquakes in the world each year. In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days one and in the last 365 days ten earthquakes of magnitude 3.0 or greater that was reported nearby.

Did you feel it?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home and country. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 94 km SSE of Pangai, Tonga.

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More information

Parameter Value Description
Magnitude 4.8 mb The magnitude for the event.
Longitude -173.9014° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -20.5462° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 71.68 km Depth of the event in kilometers.
Place 94km SSE of Pangai, Tonga Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2015-12-21 09:08:58 Time when the event occurred. UTC/GMT
Updated 2015-12-21 11:15:25 Time when the event was most recently updated. UTC/GMT
Timezone offset -720 Timezone offset from UTC in minutes at the event epicenter.
Felt 0 The total number of felt reports
CDI 1 The maximum reported intensity for the event.
MMI The maximum estimated instrumental intensity for the event.
Alert Level The alert level from the PAGER earthquake impact scale. Green, Yellow, Orange or Red.
Review Status reviewed Indicates whether the event has been reviewed by a human.
Tsunami 0 This flag is set to "1" for large events in oceanic regions and "0" otherwise. The existence or value of this flag does not indicate if a tsunami actually did or will exist.
SIG 354 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network us The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,us, A comma-separated list of network contributors.
Number of Stations Used The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 8.099 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.82 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 124 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mb The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us100048kn Id of event.
Event Code 100048kn An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us100048kn, A comma-separated list of event ids that are associated to an event.

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